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Issue 1



Vibrant@FENG - Issue 1 (May 2021)

 Research Achievements

Mode-phase-difference Photothermal Spectroscopy

In 2019, Prof. Wei Jin’s group developed an advanced gas sensing technique - Mode-phase-difference Photothermal Spectroscopy (MPD-PTS), and achieved ppt (parts-per-trillion) detection limit with 8 orders of magnitude dynamic range. This is another 2 orders of magnitude improvement over the state-of-the-art! This impressive work in optical fiber gas sensor has been reported in the journal Nature Communications on 12 February 2020 [1]. The reviewer of the journal commented that MPD-PTS is a landmark technique in fiber-optic gas sensing.

Also, the MPD-PTS technique was selected by Optical Society of China (OSC) as 中國光學十大進展候選推薦 (2020):

[1] Link of the article:



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